Difference between revisions of "Cratoxylum formosum (PROSEA)"
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<big>''[[Cratoxylum formosum]]'' (Jack) Dyer</big> | <big>''[[Cratoxylum formosum]]'' (Jack) Dyer</big> | ||
__NOTOC__ | __NOTOC__ | ||
| − | |||
:Protologue: Hook.f., Fl. Brit. India 1: 258 (1874). | :Protologue: Hook.f., Fl. Brit. India 1: 258 (1874). | ||
== Synonyms == | == Synonyms == | ||
| − | ''Tridesmis ochnoides'' Spach (1836), ''Tridesmis formosa'' (Jack) Korth. (1843), ''Cratoxylum pentadelphum'' Turcz. (1863). | + | *''Tridesmis ochnoides'' Spach (1836), |
| + | *''Tridesmis formosa'' (Jack) Korth. (1843), | ||
| + | *''Cratoxylum pentadelphum'' Turcz. (1863). | ||
== Vernacular names == | == Vernacular names == | ||
| Line 30: | Line 31: | ||
== Observations == | == Observations == | ||
| − | A medium-sized to large tree of up to 45 m tall, bole slightly fluted and spiny at base, up to 65 cm in diameter, bark surface papery scaly, grey-brown to red-brown or purplish, inner bark yellow to yellow-brown | + | *A medium-sized to large tree of up to 45 m tall, bole slightly fluted and spiny at base, up to 65 cm in diameter, bark surface papery scaly, grey-brown to red-brown or purplish, inner bark yellow to yellow-brown. |
| + | *Leaves elliptical or lanceolate to ovate or obovate, 3-17 cm × 1-8 cm, with an acute or shortly acuminate to rounded apex, sometimes glaucous beneath. | ||
| + | *Inflorescence consisting of small 1-6-flowered cymes in the lower axils of shoots or apparently axillary on older branches; flowers heterodistylous, petals white or pink to red or rarely purplish, with an entire nectary scale at base. | ||
| + | *Seeds (7-)12-17 per locule, unilaterally winged. | ||
| + | |||
| + | ''C. formosum'' occurs in primary to old secondary forest and sometimes in savanna, along streams, along mangrove swamps, in peat-swamp forest and on hill slopes on sand or clay soils up to 600(-1200) m altitude. It is divided into two subspecies: subsp. ''pruniflorum'' (Kurz) Gogelein (synonym: ''C. pruniflorum'' Kurz) occurs in mainland South-East Asia and differs from subsp. ''formosum'' in having pubescent twigs, pedicels and calyces. The density of the wood is 700-1050 kg/m<sup>3</sup> at 15% moisture content. See also the table on wood properties. | ||
== Selected sources == | == Selected sources == | ||
33, 61, 89, 100, 146, 175, 276, 422, 430, 512, 748, 779, 789, 807. | 33, 61, 89, 100, 146, 175, 276, 422, 430, 512, 748, 779, 789, 807. | ||
| + | |||
| + | == Main genus page == | ||
| + | |||
| + | *[[Cratoxylum (PROSEA)|''Cratoxylum'']] | ||
| + | |||
| + | == Authors == | ||
| + | |||
| + | *M.S.M. Sosef (selection of species) | ||
[[Category:Timbers (PROSEA)]] | [[Category:Timbers (PROSEA)]] | ||
[[Category:PROSEA]] | [[Category:PROSEA]] | ||
Latest revision as of 22:24, 28 March 2016
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Introduction |
Cratoxylum formosum (Jack) Dyer
- Protologue: Hook.f., Fl. Brit. India 1: 258 (1874).
Synonyms
- Tridesmis ochnoides Spach (1836),
- Tridesmis formosa (Jack) Korth. (1843),
- Cratoxylum pentadelphum Turcz. (1863).
Vernacular names
- Brunei: pelawan
- Indonesia: kemutul (Sumatra), mulun, kasat baku (Kalimantan)
- Malaysia: derum (Peninsular), geronggang biabas (Sabah), entemu (Sarawak)
- Philippines: salinggogon (general, Pilipino), mango-gong, marangguub (Palawan)
- Laos: tiou-tiou 'som-som
- Thailand: tiu khao (Bangkok), tiu som (Nakhon Ratchasima), muu-to (peninsular)
- Vietnam: thành ngạnh dẹp.
Distribution
Burma, southern China, southern Vietnam, Cambodia, southern Thailand, Peninsular Malaysia, Sumatra, Java, Borneo, Sulawesi and the Philippines.
Uses
The timber is used as derum; the wood is also used for firewood and charcoal. C. formosum is sometimes planted as an ornamental.
Observations
- A medium-sized to large tree of up to 45 m tall, bole slightly fluted and spiny at base, up to 65 cm in diameter, bark surface papery scaly, grey-brown to red-brown or purplish, inner bark yellow to yellow-brown.
- Leaves elliptical or lanceolate to ovate or obovate, 3-17 cm × 1-8 cm, with an acute or shortly acuminate to rounded apex, sometimes glaucous beneath.
- Inflorescence consisting of small 1-6-flowered cymes in the lower axils of shoots or apparently axillary on older branches; flowers heterodistylous, petals white or pink to red or rarely purplish, with an entire nectary scale at base.
- Seeds (7-)12-17 per locule, unilaterally winged.
C. formosum occurs in primary to old secondary forest and sometimes in savanna, along streams, along mangrove swamps, in peat-swamp forest and on hill slopes on sand or clay soils up to 600(-1200) m altitude. It is divided into two subspecies: subsp. pruniflorum (Kurz) Gogelein (synonym: C. pruniflorum Kurz) occurs in mainland South-East Asia and differs from subsp. formosum in having pubescent twigs, pedicels and calyces. The density of the wood is 700-1050 kg/m3 at 15% moisture content. See also the table on wood properties.
Selected sources
33, 61, 89, 100, 146, 175, 276, 422, 430, 512, 748, 779, 789, 807.
Main genus page
Authors
- M.S.M. Sosef (selection of species)
